Hi Mark,
Great to see that the extenders seem to have passed all the test with
flying colours.
Now how do I go about getting a set?
Ken Goodhew.
-----Original Message-----
From: volt-nuts [mailto:[email protected]] On Behalf Of
[email protected]
Sent: Wednesday, November 19, 2014 4:00 AM
To: [email protected]
Subject: volt-nuts Digest, Vol 63, Issue 13
Today's Topics:
1. Fluke 5200a extender (Mark Sims)
----------------------------------------------------------------------
Message: 1
Date: Tue, 18 Nov 2014 00:44:22 +0000
From: Mark Sims <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [volt-nuts] Fluke 5200a extender
Message-ID: <[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
I recently bought a small insulation tester DMM off of Ebay ($20, search for
"bm500a insulation tester"). It can test at 250/500/1000V. I built up three
of the 5200A extender cables and tested them. There were no problems at 1000V
(even though the ribbon cables are only rated for 300V and there are some
pretty tight clearances on the boards where etches are routed between pins of
the ribbon cable headers). It looks like there should be no problem handling
the max 190V potential difference between two adjacent pins on the 5200A bus.
I tested the cables by shorting all the top side pins and shorting all the
bottom side pins on an edge connector, hooking the completed extenders to that
edge connector, and testing the resistance between the top side and bottom
sides. That tests all the adjacent wires on the ribbons and the tight
clearances.
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